Discover the Multi-layer Composite Density Sound Proof Door, crafted from cold-rolled steel for superior shock absorption. With an STC40dB(+3) sound insulation rating, it reduces noise by up to 40 decibels. Ideal for recording studios, offices, and homes, this door also offers heat insulation, waterproofing, fireproofing, and eco-friendly features. Customizable in color and size, it blends seamlessly with any decor.